Butterfly valveiwuhlobo lwevalvu esebenzisa ilungu le-disc elivula nokuvala ukuze libuyisele cishe u-90° ukuze livule, livale noma lilungise ukugeleza kwendawo.I-Butterfly valve ayinayo nje isakhiwo esilula, usayizi omncane, isisindo esincane, ukusetshenziswa kwezinto eziphansi, usayizi omncane wokufaka, i-torque encane yokushayela, ukusebenza okulula nokusheshayo, kodwa futhi inomsebenzi omuhle wokulawula ukugeleza kanye nezici zokuvala zokuvala ngesikhathi esifanayo.Ingenye yezinhlobo zama-valve ezikhula ngokushesha eminyakeni eyishumi edlule.Ama-valve ovemvane asetshenziswa kakhulu ezimbonini eziningi.Izinhlobonhlobo kanye nenani lokusetshenziswa kwayo kusakhula, futhi ithuthukela ekushiseni okuphezulu, ukucindezela okuphezulu, ububanzi obukhulu, ukusebenza kokuvala uphawu, impilo ende, izici ezinhle kakhulu zokulungisa, kanye nokusebenza okuningi kwe-valve eyodwa.Ukuthembeka kwayo nezinye izinkomba zokusebenza sezifinyelele izinga eliphezulu.
Ngokusetshenziswa kwerabha yokwenziwa engamelana namakhemikhali ku-valve uvemvane, ukusebenza kwe-valve uvemvane kuye kwathuthukiswa.Njengoba irabha yokwenziwa inezici zokumelana nokugqwala, ukumelana nokuguguleka, ukuzinza kwe-dimensional, ukuqina okuhle, ukwakha kalula, nezindleko eziphansi, irabha yokwenziwa enezakhiwo ezahlukene ingakhethwa ngokuya ngezidingo ezahlukahlukene zokusebenzisa ukuhlangabezana nezimo zokusebenza.izivalo uvemvane.
Ngoba i-polytetrafluoroethylene (PTFE) inokumelana nokugqwala okuqinile, ukusebenza okuzinzile, akulula ukuguga, i-coefficient ephansi ye-friction, kulula ukwakha, futhi izinzile ngosayizi, futhi izakhiwo zayo eziphelele zingathuthukiswa ngokugcwalisa nokwengeza izinto ezifanele, okuholela kumandla angcono futhi ukungqubuzana.I-butterfly valve sealing material ene-coefficient ephansi inqoba ukulinganiselwa kwenjoloba yokwenziwa, ngakho-ke izinto ze-polymer ezimelelwe i-PTFE kanye nezinto zayo zokugcwalisa kanye nezinto eziguquliwe ziye zasetshenziswa kabanzi kuma-valve ovemvane, ukuze ukusebenza kwamavalve ovemvane kuthuthukiswe.I-valve ye-butterfly enezinga lokushisa elibanzi nokucindezela, ukusebenza okuthembekile kokuvala kanye nempilo ende yesevisi iye yakhiqizwa.
Ukuze kuhlangatshezwane nezidingo zokusetshenziswa kwezinga lokushisa eliphezulu neliphansi, ukuguguleka okuqinile, impilo ende nezinye izinhlelo zokusebenza zezimboni,ama-valve uvemvane avaliweathuthukiswe kakhulu.Ngokusetshenziswa kokumelana nokushisa okuphakeme, ukumelana nokushisa okuphansi, ukumelana nokugqwala okuqinile, ukumelana nokuguguleka okuqinile, kanye ne-high-power alloy materials kuma-valve butterfly, ama-valve butterfly avaliwe ngensimbi asetshenziswe kabanzi emikhakheni yezimboni ezifana nezinga lokushisa eliphezulu neliphansi, eliqinile. ukuguguleka, nokuphila isikhathi eside.
Lapho i-valve ye-butterfly ivuliwe ngokugcwele, inokumelana nokugeleza okuncane.Lapho ukuvulwa kuphakathi kuka-15 ° no-70 °, ukulawulwa kokugeleza okubucayi kungenziwa, ngakho-ke emkhakheni wokulungiswa kobubanzi obukhulu, ukusetshenziswa kwama-butterfly valves kuvame kakhulu.
Ngenxa yokuthi ukunyakaza kwepuleti uvemvane kuyasula, amavalvu ovemvane amaningi angasetshenziselwa imidiya enezinhlayiya eziqinile ezimisiwe.Ngokuya ngamandla esigxivizo, ingabuye isetshenziselwe imidiya eyimpuphu kanye ne-granular.
Ama-valve e-butterfly afanele ukulawulwa kokugeleza.Ngoba ukulahlekelwa kwengcindezi ye-valve ye-butterfly epayipini kukhulu kakhulu, okuphindwe kathathu kune-i-valve yesango, lapho ukhetha i-valve ye-butterfly, ithonya lokulahlekelwa kwengcindezi yesistimu yepayipi kufanele licatshangelwe ngokugcwele, futhi amandla epuleti ye-butterfly ukumelana nokucindezela kwepayipi lepayipi kufanele futhi kucatshangelwe uma ivaliwe.Ngaphezu kwalokho, imikhawulo yokushisa yokusebenza kwempahla yesihlalo se-elastomeric emazingeni okushisa aphakeme nawo kufanele icatshangelwe.
Amavalvu ovemvane anobude obuncane besakhiwo nobude bubonke, isivinini sokuvula nokuvala ngokushesha, nezici ezinhle zokulawula uketshezi.Umgomo wesakhiwo se-butterfly valve ifaneleka kakhulu ekwenzeni i-valve yobubanzi obukhulu.Lapho i-valve ye-butterfly idingeka ukuthi isetshenziselwe ukulawula ukugeleza, into ebaluleke kakhulu ukukhetha kahle ukucaciswa kanye nohlobo lwe-valve butterfly ukuze lusebenze kahle nangempumelelo.
Ngokuvamile, ekushayeni, ekulawuleni ukulawula kanye nendawo yodaka, kuyadingeka ukuthi kube nobude obufushane besakhiwo, isivinini sokuvula nokuvala ngokushesha, ukunqanyulwa kwengcindezi ephansi (umehluko omncane wokucindezela), futhi i-valve ye-butterfly iyanconywa.I-valve ye-Butterfly ingasetshenziswa ekulungiseni izikhundla ezimbili, ukuncipha kwesiteshi sobubanzi, umsindo ophansi, i-cavitation kanye ne-vaporization, inani elincane lokuvuza emkhathini, kanye ne-abrasive medium.I-valve ye-Butterfly nayo ingasetshenziselwa ukulungiswa kwe-throttling ngaphansi kwezimo ezikhethekile zokusebenza, noma isetshenziswe ngaphansi kwezimo zokusebenza ezifana nokuvala uphawu oluqinile, ukugqokwa okukhulu, izinga lokushisa eliphansi (cryogenic), njll.